METHOD AND DEVICE FOR ANTI-VIBRATION CALIBRATION OF COMPONENTS OF AN INSTALLATION AND IN PARTICULAR METHOD FOR CALIBRATION OF THE TUBES OF A STEAM GENERATOR AND CORRESPONDING ANTI-VIBRATION BARS

摘要

P THE SETTING PIECES 15 ARE INSERTED BETWEEN ELEMENTS 4 AT A TEMPERATURE T0 SUBSTANTIALLY DIFFERENT FROM THE SERVICE TEMPERATURE TS OF THE INSTALLATION. THE SETTINGS 15 INCLUDE AT LEAST ONE PART 22 IN SHAPE MEMORY ALLOY HAVING A FIRST CONFIGURATION AT TEMPERATURE T0 AND A SECOND CONFIGURATION AT THE TEMPERATURE TS, SO THAT THE SETTINGS 15 HAVE AN INITIAL CROSS DIMENSION LOWER THE WIDTH OF THE SPACES OF SEPARATION BETWEEN ELEMENTS 4, AT TEMPERATURE T0 AND A CROSS DIMENSION AT TS TEMPERATURE SUBSTANTIALLY SUPERIOR TO THE INITIAL DIMENSION. THE SETTING OF THE ELEMENTS IS CARRIED OUT AUTOMATICALLY AT THE TIME OF SETTING UP THE SERVICE TEMPERATURE OF THE INSTALLATION. THE INVENTION APPLIES IN PARTICULAR TO ANTI-VIBRATION BARS ARRANGED IN THE UPPER OR CHIGNON OF A STEAM GENERATOR OF A PRESSURE WATER NUCLEAR REACTOR. /P